Is there a text length limit?

There is no hard limit, but very large inputs (over ~100,000 characters) may slow down the browser. Splitting into sections is recommended for very long texts.

Text Diff Tool

Paste two texts to automatically find and highlight differences. Supports word, line, and character modes — fully client-side.

Quick answers before you start

These short answers explain the tool clearly for both visitors and search engines before interaction begins.

Q. Is it safe to paste confidential text?

A. Yes. All diffing happens locally in your browser. Your text is never sent to any server, making it safe for sensitive documents.

Q. What diff modes are available?

A. Three modes: word-level, line-level, and character-level. Differences are automatically highlighted in color.

Original Text A

Modified Text B

Diff Mode

View

All processing runs locally in your browser. No text is sent to any server.